Minor cleanup from building & diffing behavior

on various platforms.

base/hashmap.hh:
    gcc on Alpha doesn't always define __LP64__,
    even though it arguably should.
cpu/exec_context.cc:
    Clear register file on non-full-system too (even though
    it typically gets overwritten by the initial regs from
    the Process object).
sim/process.cc:
    Clear initial register copy in Process object.
    Not all regs get initialized when the executable is loaded.

--HG--
extra : convert_revision : f1fe4734a5ea81331d70994cb5284b1e9db0dceb

1 files changed, 2 insertions, 0 deletions

diff --git a/cpu/exec_context.cc b/cpu/exec_context.cc
index eedd8b8a8..e7d3e0b91 100644
--- a/cpu/exec_context.cc
+++ b/cpu/exec_context.cc
@@ -60,6 +60,7 @@ ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
       process(_process), mem(process->getMemory()), asid(_asid),
       func_exe_inst(0), storeCondFailures(0)
 {
+    memset(&regs, 0, sizeof(RegFile));
 }
 
 ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
@@ -67,6 +68,7 @@ ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
     : cpu(_cpu), thread_num(_thread_num), process(0), mem(_mem), asid(_asid),
       func_exe_inst(0), storeCondFailures(0)
 {
+    memset(&regs, 0, sizeof(RegFile));
 }
 #endif